<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2184-0628</journal-id>
<journal-title><![CDATA[Gazeta Médica]]></journal-title>
<abbrev-journal-title><![CDATA[Gaz Med]]></abbrev-journal-title>
<issn>2184-0628</issn>
<publisher>
<publisher-name><![CDATA[Círculo Médico]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2184-06282020000300247</article-id>
<article-id pub-id-type="doi">10.29315/gm.v7i3.287</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[A Realidade Acerca da Vitamina D numa População Adolescente]]></article-title>
<article-title xml:lang="en"><![CDATA[The Reality about Vitamin D in an Adolescent Population]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Faria]]></surname>
<given-names><![CDATA[Hugo de Castro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carneiro]]></surname>
<given-names><![CDATA[Sofia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santos]]></surname>
<given-names><![CDATA[Carla]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cristovão]]></surname>
<given-names><![CDATA[Cláudia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Serrão Neto]]></surname>
<given-names><![CDATA[Ana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital CUF Descobertas Centro da Criança e do Adolescente ]]></institution>
<addr-line><![CDATA[Lisboa ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital D. Estefânia  ]]></institution>
<addr-line><![CDATA[Lisboa ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>09</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>09</month>
<year>2020</year>
</pub-date>
<volume>7</volume>
<numero>3</numero>
<fpage>247</fpage>
<lpage>253</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2184-06282020000300247&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2184-06282020000300247&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2184-06282020000300247&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  Introdução:  A vitamina D é essencial para a formação óssea e a fase da adolescência é fundamental para garantir saúde óssea ao longo da vida adulta. Têm sido associadas diversas outras patologias a níveis de vitamina D subótimos. Diversos estudos em redor do globo têm mostrado prevalência de défice e insuficiência de vitamina D muito elevados, contudo persistem dúvidas acerca de quais os valores de cut-off que deverão ser utilizadas ao avaliar os seus níveis séricos.  Metodologia:  Com este estudo pretendemos avaliar os níveis de 25-hidroxivitamina D numa população adolescente e relacionar estes valores com diversas variáveis relevantes: caracterização demográfica, dados antropométricos, fotótipo, estádio de desenvolvimento pubertário, variáveis relacionadas com hábitos de vida que podem interferir com status da vitamina D nomeadamente, tipo de dieta, exposição solar, utilização de protetor solar, utilização de chapéu, meio de transporte de e para escola, prática desportiva e doenças associadas.  Resultados:  Obtivemos uma amostra de 320 adolescentes, os valores de vitamina D variaram entre 6,4 e 61,4 ng/mL, com média de 26,4 ± 8,5 ng/mL e foram considerados ótimos em 30,3% dos doseamentos, insuficientes em 49,1% e deficientes em 20,6% dos doseamentos.  Conclusão:  Conseguimos demonstrar que sexo feminino e os fotótipos IV e V são fatores de risco para valores inferiores ao recomendado e a prática de atividade física ao ar livre é fator protetor. A elevada prevalência de insuficiência e deficiência, vem reforçar a necessidade de aprofundar estudos acerca do cut-off ideal para esta vitamina.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction:  Vitamin D is essential for bone formation and the adolescence period is essential to ensure boné health throughout adult life. Several other pathologies have been associated with suboptimal vitamin D levels. Several studies around the globe have shown a very high prevalence of vitamin D deficiency and insufficiency, however doubts remain about which cut-off values should be used when assessing their serum levels.  Methodology:  With this study we intend to evaluate the levels of 25-hydroxyvitamin D in an adolescent population and relate these values with several relevant variables: demographic characterization, anthropometric data, phototype, pubertal development stage, variables related to lifestyle habits that can interfere with status vitamin D, namely, type of diet, sun exposure, use of sunscreen, use of hat, means of transport to and from school, sports and associated diseases.  Results:  We obtained a sample of 320 adolescents, vitamin D values varied between 6.4 and 61.4 ng/mL, with na average of 26.4 ± 8.5 ng/mL and were considered excellent in 30.3% of the patients, dosages, insufficient in 49.1% and deficient in 20.6% of the dosages.  Conclusion:  We were able to demonstrate that female gender and phototypes IV and V are risk factors for values lower than recommended and the practice of physical activity outdoors is a protective factor. The high prevalence of insufficiency and deficiency reinforces the need for further studies on the ideal cut-off for this vitamin.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Adolescente]]></kwd>
<kwd lng="pt"><![CDATA[Deficiência de Vitamina D]]></kwd>
<kwd lng="pt"><![CDATA[Vitamina D]]></kwd>
<kwd lng="en"><![CDATA[Adolescent]]></kwd>
<kwd lng="en"><![CDATA[Vitamin D Deficiency]]></kwd>
<kwd lng="en"><![CDATA[Vitamin D]]></kwd>
</kwd-group>
</article-meta>
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